Note. Overall Heat Transfer Coefficient to Canned Liquid During End-over-end Sterilisation

The overall heat transfer coefficient as a function of rotation speed (5-20rpm) was calculated for cans containing a 2% Nacl and 1.5% sucrose aqueous solution during end-over-end heat sterilisation at 120°C. The values obtained for the overall heat transfer coefficient, U (W/m 2 °C), were: 544.4 ± 85.3 at 5rpm, 710.7 ± 24.5 at 10 rpm, 760.5 ± 17.7 at 15rpm and 941.6 ± 22.1 at 20rpm. A correlation was developed in terms of Nusselt, rotational Reynolds and Prandtl numbers to predict U (Nu = 1.866 Re 0.379 Pr 0.38 ). The characteristic dimension in Nu and Re was the diameter of the can. This correlation (R 2 = 0.88) was valid for Re within the range of 3,012-14,820 and Pr within 2.02-2.63 values.